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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to internationally accepted test guidelines and is considered relevant, adequate and reliable.
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
no
Type of method:
thermal analysis
Melting / freezing pt.:
ca. -7 - ca. 66 °C

The cooling runs show a beginning of crystallization at 59°C. Additonally, the sample shows a glass transition temperature (amorphous components) at -68°C.

Conclusions:
The substance shows a broad melting range between -7 °C and 66°C.
Executive summary:

The melting temperature of the test item Fatty acids, C16-18 and C18-unsatd., compds. with triethanolamine was determined in accordance with the test method OECD Guideline 102 “OECD Guideline For The Testing Of Chemicals, adopted by the Council on 27th July 1995, Melting Point/Melting Range” (similar to the test method A.1. “Melting/Freezing Temperature” as described in the Official Journal of the European Communities L383A).

The test item Fatty acids, C16-18 and C18-unsatd., compds. with triethanolamine shows a melting of crystalline subcomponents between -7 °C and 66 °C (in the 1st – 2nd heating run; at ambient pressure) according to the definition in the OECD Guideline 102 (mean value from repeated determination; melting from the subcomponents in the first heating run). The cooling runs show a beginning of crystallization at 59 °C. Additional the sample shows a glass transition temperature (amorphous components) at -68 °C.

The broad melting range indicates that the substance is composed of a large variety of constituents and thus can be explained by the fact that the substance is an UVCB.

Description of key information

The substance shows a broad melting range between -7 °C and 66°C.

Key value for chemical safety assessment

Additional information

The melting temperature of the test item Fatty acids, C16-18 and C18-unsatd., compds. with triethanolamine was determined in accordance with the test method OECD Guideline 102 “OECD Guideline For The Testing Of Chemicals, adopted by the Council on 27th July 1995, Melting Point/Melting Range” (similar to the test method A.1. “Melting/Freezing Temperature” as described in the Official Journal of the European Communities L383A).

The test item Fatty acids, C16-18 and C18-unsatd., compds. with triethanolamine shows a melting of crystalline subcomponents between -7 °C and 66 °C (in the 1st – 2nd heating run; at ambient pressure) according to the definition in the OECD Guideline 102 (mean value from repeated determination; melting from the subcomponents in the first heating run). The cooling runs show a beginning of crystallization at 59 °C. Additionally the sample shows a glass transition temperature (amorphous components) at -68 °C.

The broad melting range indicates that the substance is composed of a large variety of constituents and thus can be explained by the fact that the substance is an UVCB.